The reason they are called Islamic Forex accounts or Shariah forex accounts is not because you must be a Muslim to open an Islamic Forex account. That might cause legal problems. The reason they are called Islamic Forex accounts is because they were created to meet the needs of the Islamic trading community.
According to Islamic law, or Shariah law, it is forbidden for Muslims to expect anything in return for their giving, and it is therefore forbidden to pay or accept any sort of interest in the financial markets.
This is very relevant when it comes to the Forex market and the concept of rollover fees. Rollover fees are interest fees that Forex traders pay when leaving a position open overnight. They are also referred to as SWAPs and are intended to cover the fees that the banks charge for leaving transactions open overnight. Islamic Forex accounts are therefore Swap free Forex.
the primary characteristics of islamic Forex trading accounts:

Swap Free Forex Account: In Forex trading, when traders leave positions open overnight, it is referred to as a rollover. This usually entails rollover fees, but when trading with a Forex Islamic account, these fees are waved. Get more information here http://alpari.com